Thompson r



(No Model T. R. BELL.

FLUID PRESSURE REGULATOR.

Patented Jan. 1893.

` ilmcooca N514 ue h 3o regulator through the-lines A'. B.

UNITED STA-TES PATENT p OFFICE.

THOMPSON R. BELL, OF INDIANAPOLIS, INDINA.

FLUID-PRESSURE REGULATOR.

sPEcIF'IcA'rION forming part of Letters Patent No. 489.176, 'dated January 3, ieee.

Application led SeptemherZB, 1892 Serial No. 446,934'.4 (No model.) l

`To @ZZ whom it may concern.- Be it known that I, THOMPSON R. BELL, a citizen of the United States, residing at Indianapolis, in the county of Marion and State 5 of Indiana, have invented niewand useful Improvements in Fluid-Pressure Regulators, -of which the following is a specification.

My invention relates tov improvements in iiuid pressure reducing and regulating valves, ro and consists iu a peculiar arrangement of mechanism for openin g and closing the valve thereof,and is particularly applicable to fluids n under yery high pressure which have to be reduced to a very low pressure.

The object of my invention is to provide a regulating valve, in which the friction of the valvev regulating and operating mechanism Will be reduced, to a minimum, andA to construct `a machine that will be cheap and duzo rable in its construction, and uniformly accurate and sensitive in the extreme at all ranges of reduced pressure or at any pressure at which the machine is set to reduce the high pressure fluid. I attain these objects by means of the machine illustrated in the accompanying drawings, in which similar numbers of reference designate like parts through- 2. and 3.) Fig. 2. is a part sectional plan of the same taken through the lines C.D. (See Figs. 1. andBt) Fig. is a front elevation of the regulator showing the front cover removed, Fig. 4. is an enlarged detail View of the valve mechanism showing the valve in its open position, and, Fig. 5. is a similar view showing the reducing 'valve in its closed position. 4

The machine iS composed of the front and the rear casiugs 1. and 2. having the integral' peripheral flanges 3. and 4. between which the flexible diaphragm 5. is clamped andvirmly secured by the securing bolts (l. arranged at suitable intervals around said flanges 3. and 4. to secure a close tight joint. The diaphragm 5. may be of any suitable flexible arid resilient material, but a goodquality of rubber `has been found to give best results. The 5o valve seat 7. formed on the end of the nipple 8. is preferably of a blunt conical form and has its Outer projecting end iitted with the (See Figs.-

coupling 9. by which connection is made with the reservoir containing the fluid Vunder pressure. The enlarged portion of thenipple S. is

threaded to neatly fit into its union l0 which is also threaded to be securely fitted and screwed into the top bossed portion 10. of the an'd is provided for the purpose of securing aperfeet closure of the valve on its seat.` The valve ll. is preferably cylindrical in form, and is adapted to slide longitudinally or in the direction of its axis in the bor'e or guide- Way'formed i'rtheend of the union 10. wherein it loosely fits.

To insure the free escape of the fluid from the opening of the nipple S. when the valve 11. is unseated, I provide the longitudinal grooves 13. (which may be either formed in the bore of the union l0., or on the peripheral surface of the valve ll.) through which the fiuid freely flows into the gas chamber of the regulator. The regulating level' 14. is f ulcrumed on a knife edgeor center 15. formed on the suspension or oscillating point or end of the regulating lever, s'aid point preferably of a harder material than that of the lever, and is adapted to center in the counter-bore formed in the end ot' the fulcrum 16.: the opposite end of the oscillating end or short-er armof the regulating lever 14. having the counter-bore 16, formed therein and adapted toxeceive the pointed end of the toggle or dist-anco pin 17., the Opposite pointed end of ,the latter adapted 'to bear or center in the counter-bore formed in the-end ot' the valve 11. The longer arm of the regulating lever 14. is cupped orrecessed to receive the` end of the counter-spring 19.which latter has its 4opposite end seated in the pocket 20. formed in the rear casing 2.: said spring provided for thel 1purpose of insuring the quick prompt ac-` tion of the regulating lever in responding to lthe vibrations of the diaphragm 5. 'resulting IOO for the purpose of lapping over the edges of with the valve 1l. and is adapted to slide longitudnallyhin its guide-ways 21. formed integral on the rear casing 2. lThe fulcrum adjusting screw 22. is. screwed into the front casing l. and is in perfect alignment with thc axis of the inner movable fulcrum- 1G. and the valve 11. and is adapted to'contaet with the intereepting button 23. secured on the diaphragm 5. by means of its flanges or disks which tightly clampand firmly hold said diaphragm. The button also bearson the end of the movable fulcrum- 16. to limit its end play.- The button 23 is preferably of a Very unyielding hard material as'steel, and is pref` erably formed with collars which are provided the perforation made in the diaphragm toreceivethe stein of said button 23. forLthe purpose'of securinga perfect jeintand avoiding a, leak. The diaphragm. is firmly clamped at its center between the spring' pressure plates 24. and 25. bythesecur-ing and clamp# ing screw 26,'which has its outer end prolonged through the central opening formed -in the spring pressure regulating nut '27. for

the purpose of guiding and maintaining and supportingthe diaphragm in position. The

plate 25. is cupped on one of its sides for the purpose of 'receiving the end of the pressure duced pressure to the appliance wherein it is' used.

The operation of the apparatus is as follows: The coupling 9. is first securely screwed and attached to the escape valve o f the reservoir containing the fluid underhigh -pressure and which is required to be reduced to a very diminished low pressure for use.

The valve of the reservoir is then opened to admit the high pressure fluid tothe regulating valve 11. the pressure of the iuid instantaneously opens the valve and admits a portion of the iuidinto the chamber of ther-egulator. The diaphragm 5. owing tothe pressure of the incoming'uid, is forced forward and against the pressure spring 28. yto com press it an amount proportional to the pressure at which the regulator is set bythe regulating screw or nut 27. which movement releases the end of the longer arm of vthe lever 14. and permits its movement forward through the action of the counter` spring 19. to imme diately close the valve 1 1. and when thepressure of the fluid confinedvin the regulator has attained its maximum pressure or,the press- -ure at which the spring 28 is set; thus as the fluid is used and reduced in pressure in the chamber of thel regulator, Vthe least degree, l

ate the mechanism to openthe valve'll. and to raise the .pressure of the fluid in the chamber ofthe regulator to the normal height. The working or bearing points of the lever and-its connections, being centered on knife edges or steel pointed centers, friction is reduced to an inappreciable extent, and the, mechanism is rendered sensitive in the eX- treme and prompt in its action and thereby more readily maintains the reduced fluid at a vconstant and unvarying pressure a matter to reduce'a fiuid\,11nder an exceptionally pressure. i

Having thus fully described the nature and operation of my invention what I claim as new and useful and desire to cover by Letters 'Patent of the United States therefor is:-

nation with a suitable front and rear casing 'and an interposed diaphragm, of a valve 1n equal arms, and with its shorter pointed arm fulcrumed opposite said valve, and an intereepting distance 'piece having` its centered ends'or points engaging the end of said valve and the shorter arm of said regulating-lever, and. suitable counteracting and pressure springs engaging the longer arm of said lever, substantially as set forth.

'2. In a fluid pressure regulator the combination with suitable front and rear casil'lgs valve and its seat, said valve adapted to move longitudinally and in line with said seat, a

fulcrumed on the pointed ven'd of the shorter arm, a toggle or distance pin having pointed ends and engaging suitable recesses formed -in the endof saidvalve and shorter arm of lsaid regulating 'lever, and suitable counter and pressure springs engaging the end o f said lever and the center of said diaphragm, sub stantially as set forth.

.3. In a iiuid pressure regulator, the combination with suitable rear and front casi-ugs and an interposed flexible diaphragm, of a 'reducing valve and its seat, said valve adapted to move longitudinally and in line with said valve seat, an adjustable fulcrum, a regulating screw engaging said fulcrum on the opposite side of said diaphragm, and a suitable regulating levervbetween said valve and movable fulcrum, and an intercepting pin for able pressure and countersprings engaging tially asset forth. I

4. In av Huid pressure regulator, the combination with the front and the rear casing thereof and an interposing fiexible'diaphragm, of a valve and its seat, said Valve adapted to move longitudinally and in line-with said seat, a movable fulcrum .directly opposite said valve, a regulating leverhaviug unequal arms,

the diaphragm immediately responds to operof great. importancel in regulators required- 1. In a uid pressure regulator ,thecombif said casing, a regulating Alever having un.

regulating lever having unequal arms and` a.said-lever and center of diaphragm, substan-` high pressure vto Aa very and excessively lowr roo and an interposed flexible diaphragm, of a IIO IZO

connecting said valve to said lever and suitone of @he pointed arms of which is fulcrumed or centered on the recessed end of said movable cfulerum, a distance bar or toggle having its opposite ends reduced to a point and adapt- 5 ed to engage recesses formed in the end of said short arm of the regulating lever and sid valve, a suitable fulcrum regulating screw opposite to and.on the exterior side of said diaf phragm, an interoepting piece or button of an ro unyieiding material passing through said diaphragm, between said movable fulerum and its adjusting screw and having its opposite flanges clamping saidV diaphragm, substantially as set forth. Y

In testimony whereof I have hereunto set I5 my hand in the presence of two subscribing witnesses.

THOMPSON R. BELL.

YVitnesses:

JNO. GEO. THORETTE, C. F. R. WAPPENHAUS. 

